Across
- 1. The external resemblance of an animal to another animal.
- 3. Drift A change in the frequency of in the genes of a population due to changes that happened during natural selection.
- 4. Adaptation When an animal adapts to the environment by the way its body is built.
- 8. Reproduction The process of nature when only the organisms who are best suited to their environment survive and reproduce.
- 10. Selection When humans breed other animals and plants for certain traits.
- 11. Structures A structure or organ that within time has either diminished or stopped being useful.
- 12. Structures Features of different species that are similar in function but not in structure.
- 14. An organisms ability to survive and reproduce in its environment.
Down
- 1. A change in the process of nature or an individual.
- 2. Adaptation A change in an organism due to changes in its conditions.
- 5. When an animal hides/disguises itself from a predator.
- 6. When an organism becomes better suited to the environment during a process of change.
- 7. The gradual development of a species over time.
- 9. The periodic movement of animals from one place to another.
- 13. Selection When organisms adapt to the environment and reproduce.
